ET EXPLOIT_KIT Fiesta EK Landing Apr 23 2015

Query · suricata

flow:established,from_server;
file_data;
content:"=window|3b|"; fast_pattern;
content:"String.fromCharCode";
content:"|28 2f|Win64|3b 2f|i,"; nocase;
content:"function";
pcre:"/^\s*?[^\x28\s]*?\x28\s*?(?P<a1>[^\s,\x29]+)\s*?,\s*?(?P<a2>[^\s,\x29]+)\s*?\x29\{[^\r\n]*?[\+=]String.fromCharCode\((?P=a2)\)[^\r\n]*?\}/Rs";
Raw source ET EXPLOIT_KIT Fiesta EK Landing Apr 23 2015 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET EXPLOIT_KIT Fiesta EK Landing Apr 23 2015";
    flow:established,from_server;
    file_data;
    content:"=window|3b|"; fast_pattern;
    content:"String.fromCharCode";
    content:"|28 2f|Win64|3b 2f|i,"; nocase;
    content:"function";
    pcre:"/^\s*?[^\x28\s]*?\x28\s*?(?P<a1>[^\s,\x29]+)\s*?,\s*?(?P<a2>[^\s,\x29]+)\s*?\x29\{[^\r\n]*?[\+=]String.fromCharCode\((?P=a2)\)[^\r\n]*?\}/Rs";
    classtype:exploit-kit;
    sid:2020979; rev:4;
    metadata:created_at 2015_04_23, confidence High, signature_severity Major, updated_at 2019_10_08;
)

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